BDS · Bulgaria · 74 designations

10G2SFTSFT

10G2SFTSFT is a designation in BDS for the material held under material number 1.0562, also listed as P355N. It is a material in the category Fine-grain structural steels. We list 74 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, SS, PN, MSZ, STAS, BDS, SFS and KS.

Material no. 1.0562
Category Fine-grain structural steels · 50 grades
Designations 74

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If you came for one of these

The most-used names for this grade.

About Fine-grain structural steels

Fine-grain structural steel is a name for structural steels whose properties are particularly suitable for welding. They have a higher yield strength than comparable steels. Due to the negative influence of carbon on the weldability of a material, the maximum carbon content in fine-grained structural steels is less than 0.2%. These properties are achieved in steelmaking by the addition of oxygen and nitrogen-binding elements. The fine grain in the metallurgical structure is achieved by alloying elements whose nitrides and carbides only dissolve at higher temperatures. With the same composition, they are stronger and tougher than coarse-grained steels. Fine-grained structural steels are used above all in reinforced concrete structures such as bridges, in the construction of cranes, hydraulic cylinders or other welded structures due to their special welding suitability and in the offshore area.

This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.

Also known as

74 designations · 19 standards · nothing hidden

This grade’s own namerecorded in our sources as this grade’s own designation under that standard.

Indicativetaken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering.

Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.

DIN / ENEurope · 3

UNSUnited States · 17

AISI / SAEUnited States · 10

ASTMUnited States · 3

BSUnited Kingdom · 3

AFNORFrance · 10

UNESpain · 4

ISOInternational · 1

E355Indicative

JISJapan · 6

GBChina · 1

20Indicative

GOSTRussia / CIS · 2

UNIItaly · 3

SSSweden · 2

PNPoland · 1

18G2AIndicative

MSZHungary · 1

52DIndicative

STASRomania · 1

OCS355.5aIndicative

BDSBulgaria · 2

10G2SBSBBIndicative
10G2SFTSFTIndicative

SFSFinland · 3

KSSouth Korea · 1

SM490BThis grade’s own name

Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.

Chemical composition

14 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 96.5 %Mn — 1.4 %Si — 0.5 %Ni — 0.5 %Traces & impurities · 1.1 %

Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade.

Element	% by weight
	≤ 0.18
	≤ 0.5
	1.1–1.7
	0.025
	0.015
	≤ 0.3
	≤ 0.08
	≤ 0.5
	≤ 0.1
	≤ 0.3
	≥ 0.02
	≤ 0.03
	≤ 0.05
	0.012

0.01 %0.1 %1 %10 %100 %

The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other.

Element	As publishedsource text, verbatim	Min% by weight	Max% by weight	Bound
C	≤0,18	—	0.180	Max
N	0,012	0.012	0.012	Exact
Al	≥0,020	0.020	—	Min
Si	≤0,50	—	0.500	Max
P	0,025	0.025	0.025	Exact
S	0,015	0.015	0.015	Exact
Ti	≤0,03	—	0.030	Max
V	≤0,10	—	0.100	Max
Cr	≤0,30	—	0.300	Max
Mn	1,10-1,70	1.100	1.700	Range
Ni	≤0,50	—	0.500	Max
Cu	≤0,30	—	0.300	Max
Nb	≤0,05	—	0.050	Max
Mo	≤0,08	—	0.080	Max

(Nb+Ti+V) ≤ 0,12
(Nb+Ti+V) ≤ 0,12
(Nb+Ti+V) ≤ 0,12

The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred.

Predicted transformation temperatures

computed from composition · °C

Predicted Ae3811°C

Predicted Ae1710°C

Predicted Acm421°C

Predicted Bs546°C

These four temperatures are a CALCULATION from this grade's own composition, using the published Li, Niebuhr, Meekisho & Atteridge (1998) model — never a measurement, and computed from the UPPER BOUND of each element's specified range, not a mid-range figure. Where this grade also has a measured transformation point (Ac1, Ac3, Ar1, Ar3) on file, it is shown separately, in Physical & mechanical properties, and is never replaced by the predicted figures here — Ae (predicted, equilibrium) and Ac/Ar (measured, on heating or cooling) are different physical quantities and can differ by tens of degrees; a mismatch between the two is not an error in either.

Physical & mechanical properties

Density7,85g/cm³Exact

An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material.

Properties by condition

2 conditions · 15 values

By thicknessNormalizedsource steelnumber

Thicknessmm	ReHN/mm²	RmN/mm²	A%
≤ 16	355	—	—
16 – 40	345	—	—
40 – 60	335	—	—
≤ 60	—	490 – 630	22
60 – 100	315	470 – 610	—
60 – 250	—	—	21
100 – 150	305	460 – 600	—
150 – 250	295	450 – 590	—

By delivery stateno delivery state statedsource steeljis

Delivery state	RmN/mm²	ReN/mm²	A%
Hot-rolled	490 – 610	275 – 325	17 – 23

Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ.

Heat treatment

Supply condition

Normalizingt≤16

Conditions the standard permits on delivery. No temperature or medium is published for these, so no order and no alternation is implied.

Source: www.caishuku.com

Similar grades — and why

Selection rule, stated so you can disagree with it: same number class 1.0, a shared category, and a published range for Mn / Si that overlaps this grade’s. These are neighbours in composition space — they are not equivalents, and none is claimed to be interchangeable with this grade.

P355NH1.0565

Mn 1,10-1,70 · Si ≤0,50